What is the main operational consequence of increased 'dimensional friction' on keeping inter-dimensional portal doors open and steady?

Dimensional friction refers to the inherent resistive force or impedance encountered when attempting to establish, stabilize, or maintain a connection across distinct dimensions. This force actively opposes the coherent integration of differing dimensional substrates, working against the mechanisms that create and sustain inter-dimensional linkages. Inter-dimensional portal doors are defined as precisely engineered, stable, and controlled conduits designed to facilitate passage or interaction between t....